American heavy metal bands like Slayer and Metallica and Cannibal Corpse could learn a lesson from their Japanese counterpart. If you go into the studio with your vocal tracks totally perfect (if you hang on til the one minute mark you’ll see why), then you won’t need to spend a lot of time overdubbing and tweaking your songs. It’s simple. Anyone with ears can tell that this Japanese guy is the consummate professional. He had clearly worked very perfecting his songs before he even got into the studio. And clearly his hard work paid off. I mean, this song is clearly in the can and he’s ready to knock out the next one.